Oil-burner



No. 624,|30. Patented May 2, I899.

J. S. THURMAN.

OIL BURNER.

(Application filed Feb. 12, 1898.)

(No Model.)

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J eL/ciung'ragfg PATENT OFFICE.

JOHN S. TIIURMAN, OF ST. LOUIS, MISSOURI.

OIL-BURNER.

SPECIFICATION forming part of Letters Patent No.

624,130, dated May 2, 1899.

Application filed February 12, 1898. Serial No. 670,032. (No model.)

To all whom it may concern.-

- Be it known that I, J OHN S. THURMAN, a citizen of the United States,residing at the city of St. Louis, State of Missouri, have invented acertain new and useful Improvement in Oil-Burners, of which thefollowing is a full, clear, and exact description, such as will enableothers skilled in the art to which it appertains to make and use thesame, reference being had to the accompanying drawings, forming whichFigure 1 is a longitudinal sectional view through my improvedoil-burner. Fig. 2 is a side elevational view of the same, showing oneform of controlling-valve in position. Fig. 3 is an end elevational Viewshowing the scale-plate.

This invention relates to a new and useful improvement in oil-burnersespecially adapt,- ed for use in locomotives on railroads, though it isobvious that the same can be used in stationary boilers or for suchother purposes as may be desired.

This invention consists in the construction, arrangement, andcombination of the several parts, all as willhercinafterbe described andafterward pointed out in the claim.

- In the drawings, A indicates a suitable casting, one end of whichterminates in a cylindrical nozzle 1 whose mouth is contracted, asshown. Into this nozzle l3 leads a pipe 0. The opposite end of casting Ais preferably formed with a flange D, on the face of which are suitablemarkings, forminga scale on which i s indicated the position of themovable parts of the burner.

E indicates the casting A, its forward end being slightly reduced toform a space therebetween and the nozzle B for the passage of thecompressed air or steam. Suitable projections e may be arranged on theend of this sleeve E to properly space the same from the nozzle B. Iprefer to double-thread the plug E into the casting A, so that a slightrotary movement communicated to the same will move said plugaconsiderable distance. This is to control and regulate the passage ofsteam or compart of this specification, in

go pressed air through the nozzle 13.

On the rear end of tube E, I arrange an indicator E, by which, withreference to the a tube which is'thread-edinto scale on flange D, theamount of steam or .compressed air ejected from nozzle B maybedetermined.

The threads on tube E are preferably interrupted or mutilated to form aspace into which leads an oil-pipe from any suitable source of supply,said tube being also formed with-openin gs 6, leading from said spaceinto its interior.

F indicates a needle-valve which extends through the tube E, saidneedle-valve having a tapered end cooperating with a contracted openingin the front end of said tube E. This needle-valve F controls theemission of oil from the burner and is provided with a denble thread atits rear end, which engages corresponding threads in the interior oftube E. An indicator F is also arranged on the necdle-valve, whoseposition relative to the scale on the flange D determines the amount ofoil consumed by the burner per any given space of time.

An inclosing sleeve G preferably surrounds nozzle 1 forming a space intowhich may be introduced hot air from the furnace to assist combustion ofthe fuel.

In Fig. 2 I have shown a three-way valve for controlling the steam orcompressed air to the burner. Into this valve I prefer to lead a pipefrom the boiler (marked P) and a pipe P from a source of compressed-airsupply. The object of this is to utilize air-pressure in starting thefurnace when there is no steam in the boiler, said air-pressure inducinga flow of oil through the burner and a thorough intermixture of theoxygen with the oil to start combustion.

I am aware that many minor changes in the construction, arrangement, andcombination of the several parts of this burner can be made andsubstituted for those herein shown and described without in the leastdoparting from the nature and principle of my invention.

Having thus described my invention, what I claim, and desire to secureby Letters Patent, is-

In an oil-burner, the combination with a casting A formed with a flangeD at its rear.

end, the front end forming a nozzle 13, of a steam or compressed-airsupply pipe 0 leadin g into said casting about midway its length,

an oil-supply pipe leading into said casting near its rear end, a tube Ethreaded in said casting and communicating with the oil-supply, theforward end of said tube serving as a valve for the steam by cooperating with the front end of nozzle 13, a needle-valve F threaded into tube Efor closing the passage of oil through said tube, means for rotating thetube and needle-valve independently of each other,

10 and a sleeve G secured to the casting A and inclosing the front endof nozzle B, said sleeve having an opening in its rear end for thepassage of hot air, substantially as described.

In testimony whereof I hereunto affix my signature, in the presence oftwo witnesses,' 15

this 17th day of January, 1898.

JOHN S. TIIURMAN. Witnesses:

F. R. CORNWALL, HUGH K. WAGNER.

